Bolt-heating furnace



March 16 1926. V 1,577,432

c. T. MULVANY BOLT HEATING FURNACE Filed Feb. 9,'1924 `2 Smets-smvv 2 Patented Mar. 16, 1926.

UNITED STATES PATENT OFFICE.

CLYDE T. MULVANY, OF PUEBLO, COLORADO, ASSIGNOR OF ONE-TENTI-I TO' `RUIEUS LOWRANCE, ANI) 0F ONE-TENTH TO ELMER CLATFELTER, BOTH OF PUEBLO COUNTY, COLORADO, TWO PER CENT TO LORENA MAY BELIAN, OF KIMBALL.

COUNTY, vNE:BP/ASHA, lON'lEl-'ILENTIETI- TO PAUL JONES, OF PUEBLO COUNTY, COLORADO, AND ONE'IEN'II-Iy T0 MARKUS H. BELIAN', OF LARMER COUNTY,

COLORADO.

BOLT-HEATING FURNACE.

Application led February 9, 1924. Serial No. 691,639.

To ZZ whom may conce/rn.'

Be it known that I, CLYDE T. MULVANY,

a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented certain new and useful Improvements in Bolt-Heating Furnaces, of which the following is a specilication.

This invention relates to a bolt heating furnace and has for its particular object to improve, simplify andl render .more efficient, devicesA of this character.

The invention4 is further distinguished by its universality, particularly in view of the fact that it is capable of heating with equal efliciency, stock of short or long lengths.

The invention also consists in the novel combination, construction and arrangement of parts, all of which will be made more apparent hereinafter, as this description: proceeds, especially when` considered in connection with the accompanying drawings wherein;

Figure 1 is a side elevation, partly in section, of a bolt heatingfurnace constructed in. accordance with my invention;

Fig. 2 is a transverse sectional view,

. taken substantially on thexplane indicated by the line 2 2 in Fig. 1;

Fig. 3 is atop plan view of the furnace, with certain parts broken away to show interior construction;

Fig. et is an end view, as seen from the right of Fig. 1 and,

Fig. 5 is an end elevation of the opposite end of the furnace.

Referring now particularly tothe 'drawings wherein like reference characters Iindicate like parts, it will be noted that the reference character 1=0 indicates the furnace inA its entirety,v which includes a top 11, preferably slightly arched, and fromA which extends a flue or chimney 12. The reference characters 13 and 14: indicate respectively the front and rear ends of the furnace, the flue or chimney being preferably arranged near the rear end, as clearly illustrated in Fig. 1, and adjacent the front aid thereof there is arranged a fuel nozzle l5, eounecteffl. to a fuel supply pipe 1G, provided with a valve .17; lbe fuel supply produces a hydro-carbon liet which iinpinges against a baffle wall 1S arranged in the fire box '19V of the furnace.l By reason of this contact with the batlle wall 18, the y flame is broadened and spread throughout the lire box, for a purpose which will appear more apparent hereinafter.

Arranged adjacent the rear end 145 of the furnace is a hopper 20 into which the stock to be heated is placed, the opening at thebottom of the hopper communicating with an opening 2l, formedI in the rear wall of the furnace.

However, the passage of the stock from the hopper 20 into the furnace is controlled by sprocket wheels 22 secured on a shaft 2213,. extending transversely at the rear of the furnace. This shaft may be supported by a suitable bracket 24. The notches on the sprocket wheel 22 are of asize sufficient to engagethe rods 25 which constitute the stock to be headed.

The lire box 19 of the furnace s relatively narrow, as clearly shown in Fig. 2, and

the side wall on one side of this fire box is formed with a longitudinally extending opening26, and provided at the-bottom with a water acket 27. The longitudinal opening 26 permits the stock 25 to pass longitudinally of the furnace, Vthe -movement of the stock being-,insured by incling the opening 26 downwardly fromthe rear wall of the furnace toward the front thereof, as clearly illustrated in Fig. 1. Obviously, the water jacket prevents the over-heating of that portion of the stock arranged within the furnace wall.

In the passage of the stock from the rear of the furnace to the front,l the end thereof 25", which is the end to be headed, is subjecteddirectly to the heat of the hydrocarbon jet, so that after its passage through the furnace, it is in a condition to be passed to the heading machine.

ArrangedA adjacent the front end 13 of the furnace' is a second shaft 28, which may be sup )o1-ted in suitable brackets 29. This shaft 1s provided with one fixed sprocket wheel B'Owand sprocket wheel 31 formed with collar 32, provided with a set 'screw 33 whereby this sprocket wheel may be fixed in any of its adjusted positions on the shaft 23. The sprocl'zet wheels 3() and 3l are aranged adjacent the outlet end 34 of the passageway through which the stock to be headed passes. rlhese forwardly arranged sprocket wheels are provided so that the delivery of the stock from the furnace may be controlled.

lior rotating the sprocket wheels 3G-3l at will, there is provided a foot controlled arrangement consisting essentially of a shaft 35 arranged preferably parallel with the shaft Q8 and adjacent the base of the furnace.V rlhis shaft has rotatably mounted thereon a foot pedal consisting of treadles 36 and 37, the treadle 37 being pivoted directly en the sha-ft while the treadle 36 is pivoted as at 33 on the treadle 37. A spring 39 arranged between the two treadles tends to maintain treadle 36 spaced from treadle 37, as illustrated in Fig. l.

Connected to treadle 36 is a latch bar 40, the upper end of which engages in the notches of the ratchet 3l. Pivoted to the treadle 37, as at 4l, is a pawl 42, which is preferably connected by means of a coil spring 43 to the guiding frame of the latch bar 40.

Obviously, when the pedal consisting of the treadle members 36-37 is lirst depressed, the treadle member 36 will move toward the treadle 37 and release the latch bar 40 from engagement with the sprocket wheel 3l. A continued pressure upon the pedal will rock the same about the shaft 35, whereupon the pawl 42 will be pushed upwardly, rotating the sprocket wheel one notch to cause one of the pieces of stock to be discharged. ViThen the foot of the operator is removed from the pedal, the parts will, by reason of the springs associated therewith, return to the position illustrated in Fig. 1.

Arranged adjacent the discharge end of the furnace is a pan 44, into which stock discharged from the furnace is deposited, and from which it is taken and carried to the heading machine.

The shafts ..3 ancL 2S are extended out slightly beyond one side of the furnace, and are each provided with a. sprocket wheel 45, adapted to be engaged by a sprocket chain 46. Thus, when the sprocket wheel 3l, and consequently the shaft 23 are rotated, this rotation will be transmitted by means of the sprocket wheels 45 and chain 46 to the shaft 23, arranged adjacent the rear of the furnace, whereupon this shaft, as well as the sprocket wheels 22 will partake simultaneously of a rotation to a similar degree, so that stock will be fed from the hopper 20 onto the inclined runway sinniltaneously and in a like amount, as it is delivered from the furnace into the pan 44, at the front thereof.

By adjusting the sprocket wheel 31 on the shaft 28 and by adjusting the corresponding sprocket wheel 22 at the rear of the machine on the shaft L3, stock of considerable length may be handled as eiiciently as stock of short length, thus materially increasing the ell'ectiveness and universality of the furnace.

Obviously, as the stock rolls down the inclined runway with the end thereof constantly subjected to the heat of the furnace, the end will be heated to a re'd heat, whereupim` at its discharge, it may be taken to the head ing machine and headed in the customary manner. Obviously, by reason of the structure herein described, the machine is capable of operation by a single person arranged at the discharge end of the furnace.

lVhile the invention has been described herein in some detail, it is not intended that the same be limited to the above disclosure, but reservation is made to make such changes in the details of construction and combination and arrangements of parts as may come within the purview of the accompanying claims.

Having thus described my invention what l claim is:

l. In a bolt heating furnace, a hopper for the surplus stock, an inclined runway in the wall of the furnace con'in'iunicating with the lire box along which said stock is adapted to pass, and means including simultaneously rotatable shafts with sprockets arranged adjacent said hopper and adjacent the discharge end of said runway for controlling the passage of the stock into said runway and of the discharge of said stock from said furnace, at least one of the sprockets associated with each of said shafts being adjustably mounted thereon for the purpose described.

2. In a bolt heating furnace, a fire box, a baille in said lire boX for spreading the iiame throughout the same, one side wall of said furnace being formed with an inclined passageway, a water jacket arranged in the furnace wall at the lower side of said passageway, a hopper arranged adjacent one end of said furnace for receiving the supply of stock to be heated, said hopper communicating with one end of said passageway, shafts arranged adjacent each end of said furnace, means connecting said shafts for simultaneous rotation, sprocket wheels arranged on said shafts, the sprocket wheels on the shaft adjacent said hopper controlling the passage of the stock from said hopper into said passageway, the sprocket wheels on the other of said shafts controlling the discharge of said stock from the discharge end of said passageway and means for rotating said sprocket wheels.

3. In a bolt heating furnace.` a fire box, a. baille in said fire box for spreading the flame throughout the same, one side wall of said furnace being formed with an inclined passageway, a water jacket arranged in the furnace wall at the lower side of said passageny, u hopper arranged adjacent one end. of Suid furnace 'for receiving the supply of stoel( to be heated7 Suid hopper communicating` with one end of said passageway, Shafts arranged adjacent each end of said lfurnarce, moans Connecting said shafts for simultaneous rotation, Sprocket wheels ar anged on Suid ShzL'tS, the sprocket wheelS on the Shaft adjacent Suid hopper controllingl the passage ol the stock from said hopper into said passageway, the Sprocket wheels on the other of said shafts controlling the dsoharge of said Stoel; from the discharge end of Said passage way and means for romtmg suld sprocket wheels consisting of manually controlled pedalg a latch bar operatively connected to one of said pedals. and disengageeble upon the depression of the same and a pawl Connected to the other of said pedals and operable upon the depression of the same for engaging one of Said sprocket wheels to rotate the same tooth space.

In testimony whereof I aHX my signature.

CLYDE T. MULVANY. 

